Alexandria, SD -- U.S. city in South Dakota Population (2000): 563 Housing Units (2000): 251 Land area (2000): 0.540368 sq. miles (1.399546 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.540368 sq. miles (1.399546 sq. km) FIPS code: 00820 Located within: South Dakota (SD), FIPS 46 Location: 43.654705 N, 97.781253 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Alexandria, SD Alexandria